Food

Food in Zombie Lane is a bit of a misnomer. Food as reflected in the Food Counter does not mean the amount of food. It instead reflects the amount of food credits you currently have available to spend on food items.

The irony here is that in order to obtain food credits, you need to harvest food. You don't eat the harvested food, instead, you store it up as food credits and then use that to purchase energy items. (Don't ask me why, I didn't make the game.)

But there are also other kinds of food which have various effects. (notice no food is required to play the game, it automatically adds 1 energy each 5 minutes untill the bar is at it's max. Adding energy with food or drinks will add this energy beyond the maximum energy the bar normally replenishes towards. Food does greatly enhance speed at which the game can be played because of a lot more actions can be done with it.)

You will need to complete the Help Frank the Farmer mission first. After completing the mission, you can buy crops in the Market and grow them or buy tree to harvest them. After a mission you also get the repeatable mission of holiday gifts. In those gifts you regularly will find free trees which can be planted.